/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.motoo.utils;

import java.nio.channels.SocketChannel;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import com.google.code.motoo.core.IoSession;

/**
 * IoSession帮助类
 * @author linfengqi
 * @version 1.0  May 8, 2009
 */
public class IoSessionUtils {
	
	private final static ThreadLocal<IoSession> ioSessionLocal = new ThreadLocal<IoSession>();
	
	public static IoSession getThreadLocalIoSession() {
		return ioSessionLocal.get();
	}
	public static void setThreadLocalIoSession(IoSession ioSession){
		ioSessionLocal.set(ioSession);
	}
	public static void clearThreadLocalIoSession(){
		ioSessionLocal.remove();
	}
	
	private static ConcurrentMap<SocketChannel, IoSession> containor = new ConcurrentHashMap<SocketChannel, IoSession>();

	public static void addIoSession(SocketChannel socketChannel, IoSession ioSession) {
		containor.putIfAbsent(socketChannel, ioSession);
	}
	
	public static IoSession getIoSession(SocketChannel socketChannel) {
		return containor.get(socketChannel);
	}
	
	public static void removeIoSession(SocketChannel socketChannel) {
		containor.remove(socketChannel);
	}
	
	public static ConcurrentMap<SocketChannel, IoSession> getContainor() {
		return containor;
	}
	
}
